[INFO] cloning repository https://github.com/Xiao-VoV/rust_algorithms
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Xiao-VoV/rust_algorithms" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FXiao-VoV%2Frust_algorithms", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FXiao-VoV%2Frust_algorithms'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 781d0bcc152570269243f1a24b763e83d51e5987
[INFO] checking Xiao-VoV/rust_algorithms/781d0bcc152570269243f1a24b763e83d51e5987 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FXiao-VoV%2Frust_algorithms" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Xiao-VoV/rust_algorithms on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Xiao-VoV/rust_algorithms
[INFO] finished tweaking git repo https://github.com/Xiao-VoV/rust_algorithms
[INFO] tweaked toml for git repo https://github.com/Xiao-VoV/rust_algorithms written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Xiao-VoV/rust_algorithms already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e901f5f2cfb5df39a73fc87cd817453ba52c1fc12b377746852c1fcbc252cce8
[INFO] running `Command { std: "docker" "start" "-a" "e901f5f2cfb5df39a73fc87cd817453ba52c1fc12b377746852c1fcbc252cce8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e901f5f2cfb5df39a73fc87cd817453ba52c1fc12b377746852c1fcbc252cce8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e901f5f2cfb5df39a73fc87cd817453ba52c1fc12b377746852c1fcbc252cce8", kill_on_drop: false }`
[INFO] [stdout] e901f5f2cfb5df39a73fc87cd817453ba52c1fc12b377746852c1fcbc252cce8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 37fc0529e0c85c32f8e9b146c6ad015c786c7997fc63d013bb1a5767d0d75a87
[INFO] running `Command { std: "docker" "start" "-a" "37fc0529e0c85c32f8e9b146c6ad015c786c7997fc63d013bb1a5767d0d75a87", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.85
[INFO] [stderr]    Compiling autocfg v1.3.0
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]     Checking futures-sink v0.3.30
[INFO] [stderr]     Checking futures-task v0.3.30
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking futures-io v0.3.30
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.66
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking rust_algorithm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Arc`
[INFO] [stdout]   --> src/design_patterns/singleton_pattern/mod.rs:14:21
[INFO] [stdout]    |
[INFO] [stdout] 14 |     use std::sync::{Arc, RwLock};
[INFO] [stdout]    |                     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> src/search/linear_search.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `iter::Rev` and `mem::swap`
[INFO] [stdout]  --> src/sorting/heap_sort.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{iter::Rev, mem::swap};
[INFO] [stdout]   |           ^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Display`
[INFO] [stdout]  --> src/sorting/insert_sort.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::Display;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::DerefMut`
[INFO] [stdout]  --> src/sorting/merge_sort.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::DerefMut;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `mem::swap` and `ops::Deref`
[INFO] [stdout]  --> src/sorting/select_sort.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{mem::swap, ops::Deref};
[INFO] [stdout]   |           ^^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `error`
[INFO] [stdout]  --> src/thread/shared_state_concurrency.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     error,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `male` should have an upper camel case name
[INFO] [stdout]  --> src/thread/shared_state_concurrency.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     male,
[INFO] [stdout]   |     ^^^^ help: convert the identifier to upper camel case: `Male`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `female` should have an upper camel case name
[INFO] [stdout]  --> src/thread/shared_state_concurrency.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     female,
[INFO] [stdout]   |     ^^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Female`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `other` should have an upper camel case name
[INFO] [stdout]   --> src/thread/shared_state_concurrency.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     other,
[INFO] [stdout]    |     ^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RecvError`
[INFO] [stdout]  --> src/thread/thread_message.rs:2:24
[INFO] [stdout]   |
[INFO] [stdout] 2 |     sync::mpsc::{self, RecvError},
[INFO] [stdout]   |                        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sleep`
[INFO] [stdout]  --> src/thread/mod.rs:5:20
[INFO] [stdout]   |
[INFO] [stdout] 5 |     thread::{self, sleep},
[INFO] [stdout]   |                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `borrow::Borrow`
[INFO] [stdout]  --> src/datastruct/list.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{borrow::Borrow, cell::RefCell, rc::Rc};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Arc`
[INFO] [stdout]   --> src/design_patterns/singleton_pattern/mod.rs:14:21
[INFO] [stdout]    |
[INFO] [stdout] 14 |     use std::sync::{Arc, RwLock};
[INFO] [stdout]    |                     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> src/design_patterns/singleton_pattern/mod.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `iter::Rev` and `mem::swap`
[INFO] [stdout]  --> src/sorting/heap_sort.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{iter::Rev, mem::swap};
[INFO] [stdout]   |           ^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Display`
[INFO] [stdout]  --> src/sorting/insert_sort.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::Display;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::DerefMut`
[INFO] [stdout]  --> src/sorting/merge_sort.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::DerefMut;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `mem::swap` and `ops::Deref`
[INFO] [stdout]  --> src/sorting/select_sort.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{mem::swap, ops::Deref};
[INFO] [stdout]   |           ^^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `error`
[INFO] [stdout]  --> src/thread/shared_state_concurrency.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     error,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `male` should have an upper camel case name
[INFO] [stdout]  --> src/thread/shared_state_concurrency.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     male,
[INFO] [stdout]   |     ^^^^ help: convert the identifier to upper camel case: `Male`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `female` should have an upper camel case name
[INFO] [stdout]  --> src/thread/shared_state_concurrency.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     female,
[INFO] [stdout]   |     ^^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Female`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `other` should have an upper camel case name
[INFO] [stdout]   --> src/thread/shared_state_concurrency.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     other,
[INFO] [stdout]    |     ^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RecvError`
[INFO] [stdout]  --> src/thread/thread_message.rs:2:24
[INFO] [stdout]   |
[INFO] [stdout] 2 |     sync::mpsc::{self, RecvError},
[INFO] [stdout]   |                        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sleep`
[INFO] [stdout]  --> src/thread/mod.rs:5:20
[INFO] [stdout]   |
[INFO] [stdout] 5 |     thread::{self, sleep},
[INFO] [stdout]   |                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> src/lib.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `do_something` is never used
[INFO] [stdout]  --> src/async_test/mod.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | async fn do_something() {
[INFO] [stdout]   |          ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_async` is never used
[INFO] [stdout]  --> src/async_test/mod.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn test_async() {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/async_test/timer_future.rs:61:12
[INFO] [stdout]    |
[INFO] [stdout] 58 | impl TimerFuture {
[INFO] [stdout]    | ---------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 61 |     pub fn new(duration: Duration) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Executor` is never constructed
[INFO] [stdout]   --> src/async_test/timer_future.rs:85:8
[INFO] [stdout]    |
[INFO] [stdout] 85 | struct Executor {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Spawner` is never constructed
[INFO] [stdout]   --> src/async_test/timer_future.rs:91:8
[INFO] [stdout]    |
[INFO] [stdout] 91 | struct Spawner {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `future` is never read
[INFO] [stdout]    --> src/async_test/timer_future.rs:104:5
[INFO] [stdout]     |
[INFO] [stdout] 96  | struct Task {
[INFO] [stdout]     |        ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 104 |     future: Mutex<Option<BoxFuture<'static, ()>>>,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `new_executor_and_spawner` is never used
[INFO] [stdout]    --> src/async_test/timer_future.rs:110:4
[INFO] [stdout]     |
[INFO] [stdout] 110 | fn new_executor_and_spawner() -> (Executor, Spawner) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `spawn` is never used
[INFO] [stdout]    --> src/async_test/timer_future.rs:120:8
[INFO] [stdout]     |
[INFO] [stdout] 119 | impl Spawner {
[INFO] [stdout]     | ------------ method in this implementation
[INFO] [stdout] 120 |     fn spawn(&self, future: impl Future<Output = ()> + 'static + Send) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `run` is never used
[INFO] [stdout]    --> src/async_test/timer_future.rs:143:8
[INFO] [stdout]     |
[INFO] [stdout] 142 | impl Executor {
[INFO] [stdout]     | ------------- method in this implementation
[INFO] [stdout] 143 |     fn run(&self) {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `next` is never read
[INFO] [stdout]  --> src/datastruct/list.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct LinkedList {
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 6 |     next: RefCell<Option<Rc<LinkedList>>>,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]  --> src/lib.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | #[warn(dead_code)]
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `push_back`, `push_back_by_value`, and `print_list` are never used
[INFO] [stdout]   --> src/datastruct/list.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl LinkedList {
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 18 |     pub fn new(value: i32) -> Rc<Self> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |     pub fn push_back(&self, node: Rc<Self>) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 33 |     pub fn push_back_by_value(&mut self, value: i32) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     pub fn print_list(&self) {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Female` and `Other` are never constructed
[INFO] [stdout]  --> src/design_patterns/singleton_pattern/mod.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Gender {
[INFO] [stdout]   |      ------ variants in this enum
[INFO] [stdout] 2 |     Male,
[INFO] [stdout] 3 |     Female,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 4 |     Other,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name`, `age`, and `gender` are never read
[INFO] [stdout]  --> src/design_patterns/singleton_pattern/mod.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Single {
[INFO] [stdout]   |        ------ fields in this struct
[INFO] [stdout] 7 |     name: String,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 8 |     age: usize,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 9 |     gender: Gender,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `GLOBAL_SINGLE` is never used
[INFO] [stdout]   --> src/design_patterns/singleton_pattern/mod.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |     static GLOBAL_SINGLE: Lazy<RwLock<super::Single>> = Lazy::new(|| {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `draw` is never used
[INFO] [stdout]  --> src/object_oriented/trait_object.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait Draw {
[INFO] [stdout]   |           ---- method in this trait
[INFO] [stdout] 2 |     fn draw(&self);
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Screen` is never constructed
[INFO] [stdout]  --> src/object_oriented/trait_object.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Screen {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `run` is never used
[INFO] [stdout]   --> src/object_oriented/trait_object.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl Screen {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] 10 |     pub fn run(&self) {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `width` and `height` are never read
[INFO] [stdout]   --> src/object_oriented/trait_object.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct Button {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 18 |     pub width: u32,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 19 |     pub height: u32,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `width` and `height` are never read
[INFO] [stdout]   --> src/object_oriented/trait_object.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct SelectBox {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 29 |     width: u32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 30 |     height: u32,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `binary_search` is never used
[INFO] [stdout]  --> src/search/binary_search.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn binary_search<T: PartialOrd>(vec: &mut [T], target: &T) -> Option<usize> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bineary_search` is never used
[INFO] [stdout]   --> src/search/binary_search.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn bineary_search(vec: &Vec<i32>, target: i64) -> Result<usize, usize> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bineary_search_01` is never used
[INFO] [stdout]   --> src/search/binary_search.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub fn bineary_search_01(vec: &Vec<i32>, target: i64) -> Result<usize, usize> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bineary_search_02` is never used
[INFO] [stdout]   --> src/search/binary_search.rs:60:8
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub fn bineary_search_02(vec: &Vec<i32>, target: i64) -> Result<usize, usize> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `linear_search` is never used
[INFO] [stdout]  --> src/search/linear_search.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn linear_search<T: PartialEq>(value: &T, arr: &[T]) -> Option<usize> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bubble_sort` is never used
[INFO] [stdout]  --> src/sorting/bubble_sort.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn bubble_sort<T>(mut vec: Vec<T>) -> Vec<T>
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `heap_sort_start_at_1` is never used
[INFO] [stdout]  --> src/sorting/heap_sort.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn heap_sort_start_at_1<T: Ord>(vec: &mut [T]) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_heap` is never used
[INFO] [stdout]   --> src/sorting/heap_sort.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn build_heap<T: Ord>(vec: &mut [T]) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `heapify` is never used
[INFO] [stdout]   --> src/sorting/heap_sort.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn heapify<T: Ord>(vec: &mut [T], i: usize, max_index: usize) {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `insert_sort` is never used
[INFO] [stdout]  --> src/sorting/insert_sort.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn insert_sort<T>(mut vec: Vec<T>) -> Vec<T>
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `merge_sort` is never used
[INFO] [stdout]  --> src/sorting/merge_sort.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn merge_sort<T: Ord + Copy + Sized>(vec: &mut [T]) {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `merge` is never used
[INFO] [stdout]   --> src/sorting/merge_sort.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn merge<T: Ord + Copy>(vec: &mut [T], mid: usize) {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `quick_sort` is never used
[INFO] [stdout]  --> src/sorting/quick_sort.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn quick_sort<T: Ord + Copy>(vec: &mut [T], left: usize, right: usize) {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `partition` is never used
[INFO] [stdout]  --> src/sorting/quick_sort.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn partition<T: Ord + Copy>(vec: &mut [T], mut left: usize, mut right: usize) -> usize {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `select_sort` is never used
[INFO] [stdout]  --> src/sorting/select_sort.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn select_sort<T>(mut vec: Vec<T>) -> Vec<T>
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `thread_new` is never used
[INFO] [stdout]  --> src/thread/mod.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn thread_new() {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Gender` is never used
[INFO] [stdout]  --> src/thread/shared_state_concurrency.rs:7:6
[INFO] [stdout]   |
[INFO] [stdout] 7 | enum Gender {
[INFO] [stdout]   |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Person` is never constructed
[INFO] [stdout]   --> src/thread/shared_state_concurrency.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct Person {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Person` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `shared_state_concurrency` is never used
[INFO] [stdout]   --> src/thread/shared_state_concurrency.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn shared_state_concurrency() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `message_send_rev` is never used
[INFO] [stdout]  --> src/thread/thread_message.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn message_send_rev() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `GLOBAL_INSTANCE` should have a snake case name
[INFO] [stdout]   --> src/design_patterns/singleton_pattern/mod.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | mod GLOBAL_INSTANCE {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `global_instance`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/thread/mod.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     handal.join();
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let _ = handal.join();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/thread/shared_state_concurrency.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |         i.join();
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 35 |         let _ = i.join();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 55 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `borrow::Borrow`
[INFO] [stdout]  --> src/datastruct/list.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{borrow::Borrow, cell::RefCell, rc::Rc};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `do_something` is never used
[INFO] [stdout]  --> src/async_test/mod.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | async fn do_something() {
[INFO] [stdout]   |          ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_async` is never used
[INFO] [stdout]  --> src/async_test/mod.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn test_async() {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `push_back_by_value` is never used
[INFO] [stdout]   --> src/datastruct/list.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl LinkedList {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 33 |     pub fn push_back_by_value(&mut self, value: i32) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:2:8
[INFO] [stdout]    |
[INFO] [stdout] 2  | #[warn(dead_code)]
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Female` and `Other` are never constructed
[INFO] [stdout]  --> src/design_patterns/singleton_pattern/mod.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Gender {
[INFO] [stdout]   |      ------ variants in this enum
[INFO] [stdout] 2 |     Male,
[INFO] [stdout] 3 |     Female,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 4 |     Other,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name`, `age`, and `gender` are never read
[INFO] [stdout]  --> src/design_patterns/singleton_pattern/mod.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Single {
[INFO] [stdout]   |        ------ fields in this struct
[INFO] [stdout] 7 |     name: String,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 8 |     age: usize,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 9 |     gender: Gender,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `GLOBAL_SINGLE` is never used
[INFO] [stdout]   --> src/design_patterns/singleton_pattern/mod.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |     static GLOBAL_SINGLE: Lazy<RwLock<super::Single>> = Lazy::new(|| {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `width` and `height` are never read
[INFO] [stdout]   --> src/object_oriented/trait_object.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct Button {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 18 |     pub width: u32,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 19 |     pub height: u32,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `width` and `height` are never read
[INFO] [stdout]   --> src/object_oriented/trait_object.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct SelectBox {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 29 |     width: u32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 30 |     height: u32,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bineary_search` is never used
[INFO] [stdout]   --> src/search/binary_search.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn bineary_search(vec: &Vec<i32>, target: i64) -> Result<usize, usize> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bineary_search_01` is never used
[INFO] [stdout]   --> src/search/binary_search.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub fn bineary_search_01(vec: &Vec<i32>, target: i64) -> Result<usize, usize> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bineary_search_02` is never used
[INFO] [stdout]   --> src/search/binary_search.rs:60:8
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub fn bineary_search_02(vec: &Vec<i32>, target: i64) -> Result<usize, usize> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `female` and `other` are never constructed
[INFO] [stdout]   --> src/thread/shared_state_concurrency.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | enum Gender {
[INFO] [stdout]    |      ------ variants in this enum
[INFO] [stdout] 8  |     male,
[INFO] [stdout] 9  |     female,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 10 |     other,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Gender` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `gender` are never read
[INFO] [stdout]   --> src/thread/shared_state_concurrency.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct Person {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 14 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 15 |     age: u8,
[INFO] [stdout] 16 |     gender: Gender,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Person` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `GLOBAL_INSTANCE` should have a snake case name
[INFO] [stdout]   --> src/design_patterns/singleton_pattern/mod.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | mod GLOBAL_INSTANCE {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `global_instance`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `OOP_test` should have a snake case name
[INFO] [stdout]   --> src/object_oriented/trait_object.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn OOP_test() {
[INFO] [stdout]    |            ^^^^^^^^ help: convert the identifier to snake case: `oop_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `Quick_sort_test` should have a snake case name
[INFO] [stdout]   --> src/sorting/quick_sort.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn Quick_sort_test() {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `quick_sort_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/thread/mod.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     handal.join();
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let _ = handal.join();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/thread/shared_state_concurrency.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |         i.join();
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 35 |         let _ = i.join();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 32 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.88s
[INFO] running `Command { std: "docker" "inspect" "37fc0529e0c85c32f8e9b146c6ad015c786c7997fc63d013bb1a5767d0d75a87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37fc0529e0c85c32f8e9b146c6ad015c786c7997fc63d013bb1a5767d0d75a87", kill_on_drop: false }`
[INFO] [stdout] 37fc0529e0c85c32f8e9b146c6ad015c786c7997fc63d013bb1a5767d0d75a87